Finding the Fourth Proportional to 39,930,872.79, 55,107,124.53 and 22,520,865.63
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Solution
The fourth proportional to 39,930,872.79, 55,107,124.53 and 22,520,865.63 is: 31,080,215.89
Step by Step Solution
- Step 1: Write the proportion equation
39,930,872.79 : 55,107,124.53 = 22,520,865.63 : x - Step 2: Convert to fraction form
39,930,872.79/55,107,124.53 = 22,520,865.63/x - Step 3: Cross multiply
39,930,872.79x = 55,107,124.53 × 22,520,865.63 - Step 4: Simplify right side
39,930,872.79x = 1,241,060,146,795,806.75 - Step 5: Solve for x
x = 1,241,060,146,795,806.75/39,930,872.79 - Step 6: Final answer
x = 31,080,215.89
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.